Home / 455,928.40-683,827.80-140,417.20

Finding the Fourth Proportional to 455,928.40, 683,827.80 and 140,417.20

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Solution

The fourth proportional to 455,928.40, 683,827.80 and 140,417.20 is: 210,605.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,928.40 : 683,827.80 = 140,417.20 : x
  2. Step 2: Convert to fraction form
    455,928.40/683,827.80 = 140,417.20/x
  3. Step 3: Cross multiply
    455,928.40x = 683,827.80 × 140,417.20
  4. Step 4: Simplify right side
    455,928.40x = 96,021,184,958.16
  5. Step 5: Solve for x
    x = 96,021,184,958.16/455,928.40
  6. Step 6: Final answer
    x = 210,605.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.